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2025-07-11 - 13:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackaslot5s.osadl.org (updated Fri Jul 11, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811510,0rcu_preempt753-21rngd22:04:241
811510,0rcu_preempt19-21ksoftirqd/119:57:051
811430,0rcu_preempt753-21rngd23:12:081
811370,0rcu_preempt19-21ksoftirqd/122:19:301
811360,0rcu_preempt19-21ksoftirqd/121:54:181
811340,0rcu_preempt19-21ksoftirqd/121:27:081
811340,0rcu_preempt19-21ksoftirqd/121:27:081
811230,0rcu_preempt19-21ksoftirqd/123:43:521
811110,0rcu_preempt5542-21sh23:05:181
811110,0rcu_preempt5542-21sh23:05:181
811080,0rcu_preempt54-21kswapd023:59:471
811080,0rcu_preempt19-21ksoftirqd/123:23:241
811080,0rcu_preempt19-21ksoftirqd/100:34:551
811080,0rcu_preempt19-21ksoftirqd/100:28:431
811050,0rcu_preempt19-21ksoftirqd/122:57:341
811050,0rcu_preempt19-21ksoftirqd/122:43:451
811050,0rcu_preempt10398-21ssh22:32:341
811040,0rcu_preempt19-21ksoftirqd/119:22:031
811030,0rcu_preempt54-21kswapd000:16:201
811020,0rcu_preempt54-21kswapd021:21:401
811020,0rcu_preempt19-21ksoftirqd/122:12:591
811020,0rcu_preempt19-21ksoftirqd/121:57:521
811010,0rcu_preempt19-21ksoftirqd/122:31:021
811010,0rcu_preempt19-21ksoftirqd/121:49:051
811010,0rcu_preempt0-21swapper/123:07:161
811000,0rcu_preempt19-21ksoftirqd/122:39:321
811000,0rcu_preempt19-21ksoftirqd/121:23:521
811000,0rcu_preempt19-21ksoftirqd/119:37:151
81990,0rcu_preempt19-21ksoftirqd/122:10:511
81990,0rcu_preempt19-21ksoftirqd/100:03:051
81980,0rcu_preempt19-21ksoftirqd/120:51:571
81970,0rcu_preempt29768-21ssh22:56:081
81960,0rcu_preempt54-21kswapd023:19:471
81950,0rcu_preempt54-21kswapd023:33:321
81950,0rcu_preempt19-21ksoftirqd/123:52:451
81940,0rcu_preempt19-21ksoftirqd/123:51:121
81940,0rcu_preempt19-21ksoftirqd/121:43:481
81940,0rcu_preempt19-21ksoftirqd/121:32:271
81940,0rcu_preempt19-21ksoftirqd/120:57:101
81930,0rcu_preempt19-21ksoftirqd/121:39:141
81930,0rcu_preempt19-21ksoftirqd/120:27:361
81920,0rcu_preempt19-21ksoftirqd/122:24:201
81920,0rcu_preempt19-21ksoftirqd/100:18:221
81920,0rcu_preempt19-21ksoftirqd/100:11:251
81890,0rcu_preempt19-21ksoftirqd/123:28:461
81890,0rcu_preempt19-21ksoftirqd/121:10:161
81850,0rcu_preempt19-21ksoftirqd/120:12:101
81850,0rcu_preempt19-21ksoftirqd/119:42:131
81850,0rcu_preempt19-21ksoftirqd/119:30:081
81840,0rcu_preempt19-21ksoftirqd/122:47:221
81840,0rcu_preempt19-21ksoftirqd/120:34:031
81840,0rcu_preempt16271-21kworker/1:220:26:291
81830,0rcu_preempt19-21ksoftirqd/120:10:011
81830,0rcu_preempt19-21ksoftirqd/120:03:421
81820,0rcu_preempt19-21ksoftirqd/119:18:271
81790,0rcu_preempt19-21ksoftirqd/119:35:501
81790,0rcu_preempt19-21ksoftirqd/119:06:431
81780,0rcu_preempt19-21ksoftirqd/119:16:441
81770,0rcu_preempt19-21ksoftirqd/123:41:441
81750,0rcu_preempt19-21ksoftirqd/120:17:421
81750,0rcu_preempt19-21ksoftirqd/120:17:421
81740,0rcu_preempt19-21ksoftirqd/121:02:191
81740,0rcu_preempt19-21ksoftirqd/119:56:441
81740,0rcu_preempt19-21ksoftirqd/100:22:481
81740,0rcu_preempt16271-21kworker/1:220:42:091
81730,0rcu_preempt19-21ksoftirqd/121:11:571
81720,0rcu_preempt19-21ksoftirqd/120:47:121
81710,0rcu_preempt54-21kswapd019:47:171
81690,0rcu_preempt19-21ksoftirqd/120:37:051
2517999682,0cyclictest0-21swapper/000:17:150
81660,0rcu_preempt19-21ksoftirqd/119:06:571
2517999662,0cyclictest0-21swapper/022:31:580
81650,0rcu_preempt3-21ksoftirqd/022:56:170
2517999641,0cyclictest32629-1kworker/0:2H19:27:540
2517999635,0cyclictest13410-21aten_rapower_po22:36:570
2517999622,0cyclictest30761-21ssh22:57:040
2517999606,0cyclictest20613-21ntp_offset22:07:100
2517999602,0cyclictest13647-21sh23:52:020
2517999594,0cyclictest10050irq/346-484840021:18:120
2517999592,0cyclictest28178-21ssh22:16:440
2517999592,0cyclictest0-21swapper/023:28:370
25179995911,0cyclictest0-21swapper/021:07:350
2517999582,0cyclictest25935-21/usr/sbin/munin21:36:440
2517999582,0cyclictest0-21swapper/022:06:100
25179995815,0cyclictest17420-21munin-node0
25179995815,0cyclictest17420-21munin-node0
25179995812,0cyclictest0-21swapper/023:07:000
2517999581,0cyclictest28464-21ping19:36:440
2517999577,0cyclictest32629-1kworker/0:2H19:37:300
2517999573,0cyclictest21544-21latency_hist00:01:450
2517999572,0cyclictest28464-21ping19:21:580
2517999572,0cyclictest11720-21munin-node0
2517999572,0cyclictest11399-1kworker/0:0H23:17:080
2517999572,0cyclictest0-21swapper/023:43:480
25179995715,0cyclictest14259-21ssh23:15:170
25179995711,0cyclictest0-21swapper/019:12:120
2517999571,0cyclictest24786-21ssh00:05:310
2517999562,0cyclictest8945-1kworker/0:0H21:22:160
2517999562,0cyclictest29753-21proc_pri20:57:110
2517999562,0cyclictest14903-21munin-node0
2517999562,0cyclictest0-21swapper/021:38:130
25179995614,0cyclictest0-21swapper/019:47:020
81550,0rcu_preempt9950irq/345-484840021:48:080
2517999554,0cyclictest0-21swapper/020:17:110
2517999554,0cyclictest0-21swapper/020:17:110
2517999552,0cyclictest327102sleep000:15:240
2517999552,0cyclictest30111-21latency_hist19:21:440
2517999552,0cyclictest28652-21munin-node0
2517999552,0cyclictest10921-21idleruntime-cro21:56:430
2517999552,0cyclictest0-21swapper/023:22:070
25179995515,0cyclictest30069-21ssh23:32:500
2517999551,0cyclictest1239-21snmpd00:23:000
2517999551,0cyclictest11609-21ssh00:32:020
2517999551,0cyclictest0-21swapper/021:43:520
25179995510,0cyclictest0-21swapper/021:14:270
2517999542,0cyclictest21831-21munin-node0
2517999542,0cyclictest0-21swapper/023:02:080
2517999542,0cyclictest0-21swapper/023:02:080
25179995416,0cyclictest0-21swapper/020:07:100
2517999541,0cyclictest4320-21rm23:41:280
2517999541,0cyclictest0-21swapper/022:45:360
2517999532,0cyclictest0-21swapper/022:27:110
2517999531,0cyclictest0-21swapper/000:08:160
25179995310,0cyclictest8995-21ping19:57:040
2517999522,0cyclictest0-21swapper/021:02:030
2517999522,0cyclictest0-21swapper/019:41:450
2517999522,0cyclictest0-21swapper/000:26:510
25179995212,0cyclictest0-21swapper/020:48:060
25179995212,0cyclictest0-21swapper/019:06:440
25179995211,0cyclictest0-21swapper/020:52:100
2517999521,0cyclictest9229-21dropbear23:47:000
25179995210,0cyclictest605-21ssh22:22:040
2517999511,0cyclictest22347-21cat20:36:440
25179995013,0cyclictest0-21swapper/020:42:110
25179995011,0cyclictest0-21swapper/020:06:000
81460,0rcu_preempt9950irq/345-484840019:52:080
25179994510,0cyclictest0-21swapper/020:25:170
25179993811,0cyclictest0-21swapper/020:30:240
25179992910,0cyclictest0-21swapper/020:37:050
81270,0rcu_preempt3-21ksoftirqd/019:07:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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